Stress-precluding attachment for artificial dentures



Feb. 27, 1923.

A. FEINBERG.

STRESS PRECLUDING AT'I'ACHMENT FOR ARTIFICIAL DEN'TIIRES FILED NOV. I8, I922.

Fatented I Feb, 27 i923.

ARTHUR rnimsnne,

or New Yort K, 1x171. 7

, s'rnEss-rnnoLUniue ar'rnonnn urron An'r rrcrrin neurones. j

Application filed fiovember 18, i922, Serial m. 601,893.

1 '0 all whom it may concern: o Be it known I that I, ARTHUR Enrique-no, a citizen of the United States, residing at New York city, borough of Manhattan,

county and State of New York, havelinvented a certa n new, and useful Stress.

P recluding Attachment for Artificial Dentures, of which the following is a specification.

This invention is an, attachment for artiiicial denturesfand provides means whereby such dentures maybe attached to'natural teetlrin such a manner as to preclude the transmission to the natural teeth or roots all stresses and strains, which would be apt to, in time effect and cause loosening thereof.

It is well known in the practice of dentistry that when a bridge or plate work is anchored to natural teeth in a firm or rigid manner, stresses and strains are com- Inunicated to the natural teeth from the artificial dentureein such a way as to cause irritation and loosening of the natural teeth. The attachment of my invention is so arranged and constructed as to remove or take off all the strains of the natural teeth,

and transmit them directly to the ridge or gums of the mouth, in other words the forces of mastication which are brought to bear upon the artificial denture, are transmitted directly to the gums or ridge, and the natural teeth are availed merely for I the purpose of maintaining the denture in position, the attachment maintalns the artificial denture at all times in proper positionand relation to the natural teeth and also engages with the gums and ridges so that it'does not permit the denture to draw away or become dislodged, Heretofore suggestions have been made to overcome these difficulties, and the present invention relates to improvements on these devices, and obviate the difliculties and objections indicated, and more so to furnish a more simple and efficient means for connecting an artificial denture to natural'teeth.

' It will be apparent from the hereinafter detailed description and claims, when read in conjunction with the accompanying drawm s. V V liigure 1 is a erspective view of a metallic plate to be rmly secured to the crown or clasp by'means of soldering or otherwise, and is termed the clasp part.

Figure 2 is a similar view of a metallic plate to be rigidly secured or embedded in the substance' of a plate, and is termed the the attachment lowervend inform a leg 11, which is lo'ngitudinally slotted as at 12. The denture part 13, comprises an upstanding metallic plate 1 1, which is bent laterallyv forming a tail piece 15. The upper part of plate 14 is bent at 16 to form a horizontal flange 18, which after a short distance is bent and continued downwardly in a straight line to form a tongue as at 17. The tailpiece 15, P being perforated as at 19, also has an integral, uprising flange shaped like a dovetail as at 20. The stop flanges 21 are integral, and continues from the tail piece 15, terminating at and engaging with the free ends of the tongue 17, as at Figure 2.

To assemble the parts 10 and 13, the i stop flanges are slightly bent to permit the free end of the tongue 17 to pass through the aperture 12, as in Figures 1- and 3. The i stop flanges 21 are then brought back to its original position, thereby preventing their separation. The clasp part 10 with its leg 11 extending outwardly, is soldered or brazed to the side of the clasp 22, as in Figures 4 and 5. i

In securing the denture part 13, with the artificial denture 5, the artificial denture'is brought to bear upon the tail piece 15 and against the plate '14 and over the flange 18, it is then vulcanized or soldered against either the tail piece 15, or plate 14, or both. The perforations and dove-tail of the tail part15 is for the purpose of the rubber denture, if such a denture is preferred, to have a better grip, as rubber when vulcanized against a smooth surface will'not hold, so that if the tail part 15 is made smooth without the perforations 19 or; without the dove-tail 20, the rubber denture will yield,

and below by the flanges 21.

the flange 18 It will be apparent from the foregoing description that all the forces and strains which are brought to bear upon the arti-- ficial denture When anchored tonatural teeth in a rigid manner, will be relieved and removed fro-1n the natural teeth and transniittedto the gums or ridges. The clasp part only being rigid While the plate part will yield siightiy at either side, to verticaht-iit-ing and transverse pressures propiece, said tailpiece being perforated having an integral upstanding dove-tail part, and prcvided with. twe flanges terminating at engaging with the tongue, thereby sei the denture part 2. In a device of the class described, a dental attachment having a slotted clasp part a denture part embodying a tongue which extends inte the slot of the clasp part, and a perforated tail piece provided with flanges, said flanges te'ri'iiinate at right angieswith the tree'ends of the tongue.

In a device of the class described dental attachment having a perforated clasp part a denture part cemgrising a tongue which extends into and engages with the slot oi the ciasp part, saietongue extending upwan and then bent over downwardly upon it forming; a closedloop with the forward part of the tail piece.

ARTHUR rninnnne. 

